diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 44547f1b05e..31313549e5a 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -932,12 +932,12 @@ struct gl_pixel_attrib
 
    /*--- End Pixel Transfer State ---*/
 
-   /* Pixel Zoom */
+   /** glPixelZoom */
    GLfloat ZoomX, ZoomY;
 
    /** GL_SGI_texture_color_table */
-   GLfloat TextureColorTableScale[4];
-   GLfloat TextureColorTableBias[4];
+   GLfloat TextureColorTableScale[4]; /**< RGBA */
+   GLfloat TextureColorTableBias[4];  /**< RGBA */
 };